Health monitoring system operable in a vehicle environment

• US 10,528,833 B1
• Filed: 08/06/2018
• Issued: 01/07/2020
• Est. Priority Date: 08/06/2018
• Status: Active Grant

• Current Assignee: Denso International America Incorporated (DENSO Corporation)
• Original Assignee: Denso International America Incorporated (DENSO Corporation)
• Inventors: Bhatnagar, Shalabh
• Primary Examiner(s): Previl, Daniel
• Application Number:
  US16/055,893
• Time in Patent Office: 519 Days
• Field of Search: 3405736, 340436, 3404255, 340500, 340540, 3405731, 340576, 340435
• CPC Class Codes: A61B 5/0077 Devices for viewing the surface of the body, e.g. camera, magnifying lens
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/18 for vehicle drivers or machine operators
• CPC Class Codes: A61B 5/7267 involving training the classification device
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61B 5/7285 for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal A61B6/5205, A61B6/541, A61B8/5207, A61B8/543 take precedence
• CPC Class Codes: B60K 28/06 responsive to incapacity of driver
• CPC Class Codes: B60W 2040/0818 Inactivity or incapacity of driver
• CPC Class Codes: B60W 2040/0872 Driver physiology
• CPC Class Codes: B60W 2540/221 Physiology, e.g. weight, heartbeat, health or special needs
• CPC Class Codes: B60W 2540/26 Incapacity
• CPC Class Codes: B60W 2556/45 External transmission of data to or from the vehicle
• CPC Class Codes: B60W 2756/10 Involving external transmission of data to or from the vehicle
• CPC Class Codes: B60W 40/08 related to drivers or passengers
• CPC Class Codes: B60W 60/007 Emergency override Handing over between remote control and on-board control or handing over between remote control arrangements G05D1/227
• CPC Class Codes: G05D 1/0061 for transition from automatic pilot to manual pilot and vice versa
• CPC Class Codes: G05D 1/0088 characterized by the autonomous decision making process, e.g. artificial intelligence, predefined behaviours using knowledge based models G06N5/00
• CPC Class Codes: G06V 20/597 Recognising the driver's state or behaviour, e.g. attention or drowsiness
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment
• CPC Class Codes: G16H 50/70 : for mining of medical data, e.g. analysing previous cases of other patients

Abstract

A method of controlling a vehicle is provided. The method may include steps of: acquiring occupant pulse rate information and occupant motion information for an occupant of the vehicle; classifying, using the occupant motion information, a current activity level of the occupant into one of a plurality of predetermined activity levels; determining a range of safe pulse rates for the occupant at the current activity level; determining, using the range of safe pulse rates for the occupant, if a current pulse rate of the occupant indicates a cardiac health risk to the occupant; and, responsive to a determination that the current pulse rate of the occupant indicates a cardiac health risk to the occupant, controlling the vehicle.

Claims

1. A method of controlling a vehicle, comprising steps of:

acquiring occupant pulse rate information and occupant motion information for an occupant of the vehicle;

classifying, using the occupant motion information, a current activity level of the occupant into one of a plurality of predetermined activity levels;

determining a range of safe pulse rates for the occupant at the current activity level, the step of determining the range of safe pulse rates including determining a safe minimum pulse rate for the occupant at the current activity level of the occupant and determining a safe maximum pulse rate for the occupant at the current activity level of the occupant;

determining, using the range of safe pulse rates for the occupant, if a current pulse rate of the occupant indicates a cardiac health risk to the occupant; and

responsive to a determination that the current pulse rate of the occupant indicates a cardiac health risk to the occupant, controlling the vehicle.

2. The method of claim 1 wherein the occupant motion information comprises x, y, and z components of an acceleration of a portion of a body of the occupant during movement of the portion of the body at the current activity level of the occupant.

3. The method of claim 1 wherein the step of determining if the current pulse rate of the occupant indicates a cardiac health risk to the occupant comprises steps of:

determining when the current pulse rate of the occupant is outside the range of safe pulse rates;

responsive to a determination that the current pulse rate of the occupant is outside the range of safe pulse rates, determining if a difference between the current pulse rate of the occupant and a second most recent pulse rate exceeds a predetermined threshold value;

responsive to a determination that the difference between the current pulse rate of the occupant and the second most recent pulse rate exceeds the predetermined threshold value, determining if a difference between the second most recent pulse rate and a third most recent pulse rate exceeds the predetermined threshold value; and

responsive to a determination that the difference between the second most recent pulse rate and the third most recent pulse rate exceeds the predetermined threshold value, determining that the current pulse rate of the occupant indicates a cardiac health risk to the occupant.

4. The method of claim 3 wherein the step of determining when the current pulse rate of the occupant is outside the range of safe pulse rates comprises steps of:

determining if the current pulse rate of the occupant is below the safe minimum pulse rate for the occupant at the current activity level of the occupant; and

determining if the current pulse rate of the occupant is above the safe maximum pulse rate for the occupant at the current activity level of the occupant.

5. The method of claim 3 further comprising the step of, responsive to a determination that the current pulse rate of the occupant is not outside the range of safe pulse rates, storing occupant pulse rate information and occupant motion information in a memory, wherein the occupant pulse rate information and occupant motion information are time-correlated.

6. The method of claim 3 further comprising the step of, responsive to a determination that the difference between the current pulse rate of the occupant and the second most recent pulse rate does not exceed the predetermined threshold value, storing the current pulse rate of the occupant that is outside the range of safe pulse rates in a memory.

7. The method of claim 3 further comprising step of, responsive to a determination that the difference between the second most recent pulse rate and the third most recent pulse rate does not exceed the predetermined threshold value, storing the current pulse rate of the occupant that is outside the range of safe pulse rates in a memory.

8. The method of claim 1 further comprising the steps of:

acquiring environmental information;

time-correlating the environmental information with the occupant pulse rate information and the occupant motion information; and

storing the time-correlated environmental information in a memory.

9. The method of claim 1 further comprising the step of, responsive to a determination that the current pulse rate of the occupant indicates a cardiac health risk to the occupant, generating one or more alerts directed to at least one of emergency medical personnel and any vehicles residing within a predetermined distance of the vehicle.

10. A system for autonomously controlling a vehicle, the system comprising:

a vehicle computing system; and

a health monitoring system including one or more health monitoring system processors, and a health monitoring system memory in communication with the one or more health monitoring system processors, the health monitoring system memory being configured for storing information and program instructions usable by the one or more health monitoring system processors, and wherein the health monitoring system memory stores,

a user activity level classification module including instructions that when executed by the one or more health monitoring system processors cause the one or more processors to classify a current activity level of a vehicle occupant using motion information relating to the vehicle occupant;

a cardiac health risk determination module including instructions that when executed by the one or more health monitoring system processors cause the one or more processors to determine if a current pulse rate of the vehicle occupant at the current activity level indicates a cardiac health risk to the vehicle occupant; and

a health alert generation module including instructions that when executed by the one or more processors cause the one or more processors to, responsive to a determination that a current pulse rate of the vehicle occupant indicates a cardiac health risk to the vehicle occupant, generate one or more health alert signals to the vehicle computing system,

the vehicle computing system being in communication with the health monitoring system and configured for autonomously controlling the vehicle, the vehicle computing system including one or more processors for controlling operation of the vehicle computing system, and a memory for storing data and program instructions usable by the one or more processors for controlling operation of the vehicle computing system, wherein the one or more processors for controlling operation of the vehicle computing system are configured to execute instructions stored in the memory to control the vehicle responsive to receipt of a health alert signal from the health monitoring system.

11. The system of claim 10 wherein the cardiac health risk determination module further includes instructions that when executed by the one or more health monitoring system processors cause the one or more processors to determine a range of safe pulse rates for the vehicle occupant at the current activity level of the occupant, and to determine, using the range of safe pulse rates for the vehicle occupant, if a current pulse rate of the occupant at the current activity level indicates a cardiac health risk to the vehicle occupant.

12. The system of claim 11 wherein the cardiac health risk determination module further includes instructions that when executed by the one or more processors cause the one or more processors to:

determine when a current pulse rate of the vehicle occupant is outside the range of safe pulse rates;

responsive to a determination that the current pulse rate of the vehicle occupant is outside the range of safe pulse rates, determine if a difference between the current pulse rate of the vehicle occupant and a second most recent pulse rate exceeds a predetermined threshold value;

responsive to a determination that the difference between the current pulse rate of the vehicle occupant and a second most recent pulse rate exceeds the predetermined threshold value, determine if a difference between the second most recent pulse rate and a third most recent pulse rate exceeds the predetermined threshold value; and

responsive to a determination that the difference between the second most recent pulse rate and the third most recent pulse rate exceeds the predetermined threshold value, determine that the current pulse rate of the vehicle occupant at the current activity level indicates a cardiac health risk to the vehicle occupant.

13. The system of claim 10 wherein the health monitoring system further comprises a pulse rate sensor configured to provide occupant pulse rate information to the one or more health monitoring system processors, and at least one motion sensor configured to provide vehicle occupant motion information to the one or more health monitoring system processors.

14. The system of claim 13 wherein the pulse rate sensor and the at least one motion sensor are incorporated into a sensor unit configured to be wearable by a vehicle occupant.

15. The system of claim 10 further comprising at least one communications interface configured to enable communication of vehicle occupant pulse rate information and vehicle occupant motion information to the one or more health monitoring system processors and/or the health monitoring system memory.

16. The system of claim 15 wherein the one or more health monitoring system processors and the health monitoring system memory are configured to be positionable in the vehicle or are incorporated into a cloud computing network physically separated from the vehicle.

17. The system of claim 10 further comprising at least one communications interface configured to enable communication between the health monitoring system and the vehicle computing system.

18. The system of claim 10 further comprising at least one communications interface configured to enable communication between the health monitoring system and vehicles other than the vehicle.

19. The system of claim 10 wherein the one or more processors for controlling operation of the vehicle computing system are configured to execute instructions stored in the memory to generate one or more alerts directed to emergency medical personnel and/or any vehicles residing within a predetermined distance of the vehicle.